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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "cc/CCQuadCuller.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
using namespace WebCore;
namespace {
class CCQuadCullerTest : public testing::Test {
};
class TestDrawQuad : public CCDrawQuad {
public:
TestDrawQuad(const CCSharedQuadState* state, Material m, const IntRect& rect)
: CCDrawQuad(state, m, rect)
{
}
static PassOwnPtr<TestDrawQuad> create(const CCSharedQuadState* state, Material m, const IntRect& rect)
{
return adoptPtr(new TestDrawQuad(state, m, rect));
}
};
void setQuads(CCSharedQuadState* rootState, CCSharedQuadState* childState, CCQuadList& quadList)
{
quadList.clear();
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(100, 0), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(200, 0), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(0, 100), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(100, 100), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(200, 100), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(0, 200), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(100, 200), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(rootState, CCDrawQuad::TiledContent, IntRect(IntPoint(200, 200), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(childState, CCDrawQuad::TiledContent, IntRect(IntPoint(), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(childState, CCDrawQuad::TiledContent, IntRect(IntPoint(100, 0), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(childState, CCDrawQuad::TiledContent, IntRect(IntPoint(0, 100), IntSize(100, 100))));
quadList.append(TestDrawQuad::create(childState, CCDrawQuad::TiledContent, IntRect(IntPoint(100, 100), IntSize(100, 100))));
}
#define DECLARE_AND_INITIALIZE_TEST_QUADS \
CCQuadList quadList; \
TransformationMatrix childTransform; \
IntSize rootSize = IntSize(300, 300); \
IntRect rootRect = IntRect(IntPoint(), rootSize); \
IntSize childSize = IntSize(200, 200); \
IntRect childRect = IntRect(IntPoint(), childSize);
TEST(CCQuadCullerTest, verifyCullChildLinesUpTopLeft)
{
DECLARE_AND_INITIALIZE_TEST_QUADS
OwnPtr<CCSharedQuadState> rootState = CCSharedQuadState::create(TransformationMatrix(), TransformationMatrix(), rootRect, IntRect(), 1.0, true);
OwnPtr<CCSharedQuadState> childState = CCSharedQuadState::create(childTransform, TransformationMatrix(), childRect, IntRect(), 1.0, true);
setQuads(rootState.get(), childState.get(), quadList);
EXPECT_EQ(quadList.size(), 13u);
CCQuadCuller::cullOccludedQuads(quadList);
EXPECT_EQ(quadList.size(), 9u);
}
TEST(CCQuadCullerTest, verifyCullWhenChildOpacityNotOne)
{
DECLARE_AND_INITIALIZE_TEST_QUADS
OwnPtr<CCSharedQuadState> rootState = CCSharedQuadState::create(TransformationMatrix(), TransformationMatrix(), rootRect, IntRect(), 1.0, true);
OwnPtr<CCSharedQuadState> childState = CCSharedQuadState::create(childTransform, TransformationMatrix(), childRect, IntRect(), 0.9, true);
setQuads(rootState.get(), childState.get(), quadList);
EXPECT_EQ(quadList.size(), 13u);
CCQuadCuller::cullOccludedQuads(quadList);
EXPECT_EQ(quadList.size(), 13u);
}
TEST(CCQuadCullerTest, verifyCullWhenChildOpaqueFlagFalse)
{
DECLARE_AND_INITIALIZE_TEST_QUADS
OwnPtr<CCSharedQuadState> rootState = CCSharedQuadState::create(TransformationMatrix(), TransformationMatrix(), rootRect, IntRect(), 1.0, true);
OwnPtr<CCSharedQuadState> childState = CCSharedQuadState::create(childTransform, TransformationMatrix(), childRect, IntRect(), 1.0, false);
setQuads(rootState.get(), childState.get(), quadList);
EXPECT_EQ(quadList.size(), 13u);
CCQuadCuller::cullOccludedQuads(quadList);
EXPECT_EQ(quadList.size(), 13u);
}
TEST(CCQuadCullerTest, verifyCullCenterTileOnly)
{
DECLARE_AND_INITIALIZE_TEST_QUADS
childTransform.translate(50, 50);
OwnPtr<CCSharedQuadState> rootState = CCSharedQuadState::create(TransformationMatrix(), TransformationMatrix(), rootRect, IntRect(), 1.0, true);
OwnPtr<CCSharedQuadState> childState = CCSharedQuadState::create(childTransform, TransformationMatrix(), childRect, IntRect(), 1.0, true);
setQuads(rootState.get(), childState.get(), quadList);
EXPECT_EQ(quadList.size(), 13u);
CCQuadCuller::cullOccludedQuads(quadList);
EXPECT_EQ(quadList.size(), 12u);
}
TEST(CCQuadCullerTest, verifyCullChildLinesUpBottomRight)
{
DECLARE_AND_INITIALIZE_TEST_QUADS
childTransform.translate(100, 100);
OwnPtr<CCSharedQuadState> rootState = CCSharedQuadState::create(TransformationMatrix(), TransformationMatrix(), rootRect, IntRect(), 1.0, true);
OwnPtr<CCSharedQuadState> childState = CCSharedQuadState::create(childTransform, TransformationMatrix(), childRect, IntRect(), 1.0, true);
setQuads(rootState.get(), childState.get(), quadList);
EXPECT_EQ(quadList.size(), 13u);
CCQuadCuller::cullOccludedQuads(quadList);
EXPECT_EQ(quadList.size(), 9u);
}
TEST(CCQuadCullerTest, verifyNonAxisAlignedQuadsDontOcclude)
{
DECLARE_AND_INITIALIZE_TEST_QUADS
// Use a small rotation so as to not disturb the geometry significantly.
childTransform.rotate(1);
OwnPtr<CCSharedQuadState> rootState = CCSharedQuadState::create(TransformationMatrix(), TransformationMatrix(), rootRect, IntRect(), 1.0, true);
OwnPtr<CCSharedQuadState> childState = CCSharedQuadState::create(childTransform, TransformationMatrix(), childRect, IntRect(), 1.0, true);
setQuads(rootState.get(), childState.get(), quadList);
EXPECT_EQ(quadList.size(), 13u);
CCQuadCuller::cullOccludedQuads(quadList);
EXPECT_EQ(quadList.size(), 13u);
}
// This test requires some explanation: here we are rotating the quads to be culled.
// The 2x2 tile child layer remains in the top-left corner, unrotated, but the 3x3
// tile parent layer is rotated by 1 degree. Of the four tiles the child would
// normally occlude, three will move (slightly) out from under the child layer, and
// one moves further under the child. Only this last tile should be culled.
TEST(CCQuadCullerTest, verifyNonAxisAlignedQuadsSafelyCulled)
{
DECLARE_AND_INITIALIZE_TEST_QUADS
// Use a small rotation so as to not disturb the geometry significantly.
TransformationMatrix parentTransform;
parentTransform.rotate(1);
OwnPtr<CCSharedQuadState> rootState = CCSharedQuadState::create(parentTransform, TransformationMatrix(), rootRect, IntRect(), 1.0, true);
OwnPtr<CCSharedQuadState> childState = CCSharedQuadState::create(TransformationMatrix(), TransformationMatrix(), childRect, IntRect(), 1.0, true);
setQuads(rootState.get(), childState.get(), quadList);
EXPECT_EQ(quadList.size(), 13u);
CCQuadCuller::cullOccludedQuads(quadList);
EXPECT_EQ(quadList.size(), 12u);
}
} // namespace
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